JPH09262297A - Catheter for detecting gas density in expiration - Google Patents
Catheter for detecting gas density in expirationInfo
- Publication number
- JPH09262297A JPH09262297A JP8053991A JP5399196A JPH09262297A JP H09262297 A JPH09262297 A JP H09262297A JP 8053991 A JP8053991 A JP 8053991A JP 5399196 A JP5399196 A JP 5399196A JP H09262297 A JPH09262297 A JP H09262297A
- Authority
- JP
- Japan
- Prior art keywords
- catheter
- inner catheter
- outer catheter
- gas concentration
- tip portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 230000036407 pain Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 27
- 238000005259 measurement Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 210000003300 oropharynx Anatomy 0.000 description 5
- 206010002091 Anaesthesia Diseases 0.000 description 3
- 230000037005 anaesthesia Effects 0.000 description 3
- 230000036387 respiratory rate Effects 0.000 description 3
- 238000002627 tracheal intubation Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は非挿管による麻酔時
の被計測者（患者）の呼吸をモニターするに際し、被計
測者の中咽頭部の呼気ガス濃度、呼吸数を測定し麻酔事
故を防止することが可能な呼気ガス濃度検出用カテーテ
ルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents the anesthesia accident by measuring the expiratory gas concentration and respiratory rate in the oropharynx of the subject when monitoring the respiration of the subject (patient) during anesthesia by non-intubation. The present invention relates to a catheter for detecting an exhaled gas concentration that can
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】非挿
管時の呼吸数、呼気ガス濃度のモニターとしては、心電
図の電極でインピーダンス法による方法が一般的である
が、体表面からのモニターであるため、必ずしも信頼で
きるデータが得られない。呼気ガスモニターとしては、
鼻よりの酸素投与カテーテルの酸素吹き出し口の開口部
より吸引する方法があるが、実際には空気で薄まるため
測定不可能である。そこで本発明者らは中咽頭までカテ
ーテルを挿入して呼気ガス濃度と呼吸数を測定する方法
を今回初めて試み、この方法に適したカテーテルを発明
するに至った。2. Description of the Related Art As a monitor of respiratory rate and exhaled gas concentration during non-intubation, a method of impedance method using electrodes of electrocardiogram is generally used, but it is a monitor from the body surface. Therefore, reliable data cannot always be obtained. As an exhalation gas monitor,
There is a method of suctioning from the opening of the oxygen outlet of the oxygen administration catheter from the nose, but in reality it cannot be measured because it is diluted with air. Therefore, the present inventors have for the first time attempted a method for measuring the exhaled gas concentration and respiratory rate by inserting a catheter up to the oropharynx, and have invented a catheter suitable for this method.
【０００３】[0003]
［１］本発明は外側カテーテル２の中に内側カテーテル
４を配置することにより構成され、外側カテーテル２と
内側カテーテル４は柔軟性を有する材料から構成され、
外側カテーテル２の先端部３は円錐台状に形成され、内
側カテーテル４は先端部７をテーパーに形成し、外周に
移動式ロック部５を装着し、後方にコネクター６を接続
し、内側カテーテル４の先端部７を外側カテーテル２の
先端部３の後方に配置した、呼気ガス濃度検出用カテー
テル１を提供する。 ［２］本発明は内側カテーテル４は、先端部７の後方に
孔８を形成するかあるいは先端部７を閉塞しかつテーパ
ー部にスリット９を形成した［１］記載の呼気ガス濃度
検出用カテーテル１を提供する。 ［３］本発明は外側カテーテル２は先端部３の後方側面
に複数の孔８ａを形成した［１］ないし［３］記載の呼
気ガス濃度検出用カテーテル１を提供する。 ［４］本発明は外側カテーテル２の内壁面に複数の溝１
２を形成した［１］ないし［３］記載の呼気ガス濃度検
出用カテーテル１を提供する。 ［５］本発明は内側カテーテル４の外側に引き出し目標
線１０を形成した［１］ないし［４］記載の呼気ガス濃
度検出用カテーテル１を提供する。 ［６］本発明は外側カテーテル２の後方に分岐部１１を
設けこれに内側カテーテル４と外側カテーテル２の延長
カテーテル４ａ、２ａを接続し、延長カテーテル４ａ、
２ａにコネクター６、６を接続した［１］ないし［５］
に記載の呼気ガス濃度検出用カテーテル１を提供する。[1] The present invention is configured by disposing the inner catheter 4 in the outer catheter 2, and the outer catheter 2 and the inner catheter 4 are made of a flexible material,
The tip portion 3 of the outer catheter 2 is formed in a truncated cone shape, the tip portion 7 of the inner catheter 4 is formed in a taper shape, the movable lock portion 5 is mounted on the outer circumference, and the connector 6 is connected to the rear side. Provided is a catheter 1 for detecting an exhaled gas concentration, in which a distal end portion 7 is disposed behind a distal end portion 3 of an outer catheter 2. [2] In the present invention, the inner catheter 4 has a hole 8 formed behind the distal end portion 7, or the distal end portion 7 is closed, and a slit 9 is formed in the tapered portion. Providing 1. [3] The present invention provides the catheter 1 for detecting an exhaled gas concentration according to [1] to [3], wherein the outer catheter 2 has a plurality of holes 8a formed in the rear side surface of the distal end portion 3. [4] The present invention provides a plurality of grooves 1 on the inner wall surface of the outer catheter 2.
A catheter 1 for detecting an exhaled gas concentration according to [1] to [3], wherein the catheter 1 is formed. [5] The present invention provides the expiratory gas concentration detecting catheter 1 according to [1] to [4], in which the extraction target line 10 is formed outside the inner catheter 4. [6] The present invention provides a branch portion 11 behind the outer catheter 2 and connects the inner catheter 4 and the extension catheters 4a and 2a of the outer catheter 2 to the extension portion 4a,
[1] to [5] with connectors 6 and 6 connected to 2a
The catheter 1 for detecting the exhaled gas concentration according to 1. is provided.
【０００４】[0004]
【発明の実施の形態】図１は本発明の呼気ガス濃度検出
用カテーテル１（以下「カテーテル１」）の概略図で、
カテーテル１は外側カテーテル２の中に内側カテーテル
４を配置することにより構成される。1 is a schematic view of a catheter 1 for detecting exhaled gas concentration according to the present invention (hereinafter referred to as "catheter 1").
The catheter 1 is constructed by placing an inner catheter 4 inside an outer catheter 2.
【０００５】外側カテーテル２と内側カテーテル４は、
例えばポリ塩化ビニル、ポリウレタン、シリコーン等
（いわゆる柔軟性を有する材料）より構成し、外側カテ
ーテル２の直径を５Ｆから１２Ｆ、内側カテーテル４の
直径を３Ｆから１０Ｆの範囲に選定し、外側カテーテル
２の先端部３を円錐台状に形成することにより被計測者
の鼻孔に挿入する際に、被計測者に与える苦痛や違和感
が殆どなく、挿入も容易で、中咽頭部に容易に留置する
ことができる。また円錐台状の先端部３のみを外側カテ
ーテル２本体の構成材料よりさらに柔らかい材料よりな
るソフトチップに置換することができる。The outer catheter 2 and the inner catheter 4 are
For example, the outer catheter 2 is made of polyvinyl chloride, polyurethane, silicone or the like (so-called flexible material), the outer catheter 2 has a diameter of 5F to 12F, and the inner catheter 4 has a diameter of 3F to 10F. When the tip portion 3 is formed into a truncated cone shape, there is almost no pain or discomfort given to the measurement subject when the measurement subject is inserted into the nostril of the measurement subject, the insertion is easy, and the device can be easily placed in the oropharynx. it can. Further, only the truncated cone-shaped tip portion 3 can be replaced with a soft tip made of a material softer than the constituent material of the outer catheter 2 main body.
【０００６】またカテーテルの組み立て時に、内側カテ
ーテル４の先端部７を外側カテーテル２の先端部３から
０．５ｃｍから３ｃｍ後方にずらして配置することが好
ましい。外側カテーテル２は、鼻孔中の測定したい位置
（鼻穴よりの所定の距離）に差し込んで固定し、そこの
部位のガス成分を内側カテーテル４の先端部７を経て吸
引する。このため内側カテーテル４の先端部７から鼻孔
中の水分吸引を防止するため、外側カテーテル２の先端
部３より３ｃｍを越えて内側カテーテル４の先端部７を
後方に配置しすぎると内側カテーテル４の先端部７より
鼻孔中のガス成分を吸引しずらくなるので正確なガス成
分の分析ができない。他方、内側カテーテル４の先端部
７を外側カテーテル２の先端部３から後方に０．５ｃｍ
未満に配置すると内側カテーテル４内へ水分が侵入しや
すくなるので好ましくない。外側カテーテル２の先端部
７（厳密に言えばカテーテル１の先端部（外側カテーテ
ル２の先端部３と内側カテーテル４の先端部７の双
方））を被計測者の鼻孔に挿入して吸引をかけ、被計測
者の水分が外側カテーテル２の先端部３に侵入してきて
もさらに内側カテーテル４の内部まで侵入することはな
い。以上のように内側カテーテル４の先端部７を外側カ
テーテル２の先端部３から０．５ｃｍから３ｃｍ後方に
ずらして配置することにより、水分の侵入のおそれがな
く、鼻孔中の正確なガス成分の測定を行うことが可能と
なる。Further, when the catheter is assembled, it is preferable that the tip portion 7 of the inner catheter 4 is displaced 0.5 cm to 3 cm rearward from the tip portion 3 of the outer catheter 2. The outer catheter 2 is inserted and fixed at a position to be measured (a predetermined distance from the nostril) in the nostril, and the gas component at that portion is sucked through the tip portion 7 of the inner catheter 4. For this reason, in order to prevent the suction of water in the nostril from the tip portion 7 of the inner catheter 4, if the tip portion 7 of the inner catheter 4 is disposed too far behind the tip portion 3 of the outer catheter 2 by more than 3 cm, Since it is difficult to suck the gas component in the nostril from the tip portion 7, accurate gas component analysis cannot be performed. On the other hand, the tip portion 7 of the inner catheter 4 is placed 0.5 cm rearward from the tip portion 3 of the outer catheter 2.
If it is placed below the range, water easily enters the inner catheter 4, which is not preferable. Insert the tip portion 7 of the outer catheter 2 (strictly speaking, the tip portion of the catheter 1 (both the tip portion 3 of the outer catheter 2 and the tip portion 7 of the inner catheter 4)) into the nostril of the subject and apply suction. Even if the water content of the measurement subject enters the distal end portion 3 of the outer catheter 2, it does not further penetrate into the inner catheter 4. As described above, by arranging the distal end portion 7 of the inner catheter 4 so as to be rearwardly displaced from the distal end portion 3 of the outer catheter 2 by 0.5 cm to 3 cm, there is no risk of water intrusion, and accurate gas components in the nostril It becomes possible to perform the measurement.
【０００７】さらに図２に示すように内側カテーテル４
の先端部７（前方は開口されている）にテーパーを形成
し外側カテーテル２の内壁面より浮かすように配置する
ことにより内側カテーテル４内部への被計測者の水分の
侵入を防止することができる。さらに図３に示すように
内側カテーテル４の先端部７（前方は開口されている）
より若干後方（好ましくは先端部７から０．５ｃｍから
３ｃｍの範囲が良い。先端部７から０．５ｃｍ未満では
水分が侵入しやすくなり、先端部７から３ｃｍを越える
と鼻孔中のガス成分を吸引しずらくなるので好ましくな
い。）に孔８を形成しても被計測者の水分が内側カテー
テル４の内部へ侵入するのを防止することができる。さ
らに図４に示すように内側カテーテル４の先端部７（前
方は閉塞されている）のテーパー部にスリット９を形成
して、内側カテーテル４の内部に水分が侵入するのを防
止し、外側カテーテル２の中に挿入しやすくなるように
することが可能である。Further, as shown in FIG. 2, the inner catheter 4
By forming a taper on the tip end portion 7 (opened at the front) and arranging it so as to float above the inner wall surface of the outer catheter 2, it is possible to prevent water from entering the measurement subject inside the inner catheter 4. . Furthermore, as shown in FIG. 3, the distal end portion 7 of the inner catheter 4 (the front portion is open)
A little more rearward (preferably in the range of 0.5 cm to 3 cm from the tip 7. If less than 0.5 cm from the tip 7, water may easily enter, and if it exceeds 3 cm from the tip 7, gas components in the nostrils may be removed. Even if the hole 8 is formed in the inner catheter 4, it is possible to prevent water of the measurement subject from entering the inside of the inner catheter 4. Further, as shown in FIG. 4, a slit 9 is formed in the tapered portion of the distal end portion 7 (the front portion is closed) of the inner catheter 4 to prevent water from entering the inside of the inner catheter 4, It is possible to make it easier to insert into 2.
【０００８】また図５に示すように外側カテーテル２の
円錐台状先端部３（前方は開口されている）の後方側面
に、複数の孔８ａを形成することにより、内側カテーテ
ル４の内部に水分が侵入するのを防止することができ
る。孔８ａの数は２箇所から２０箇所、孔８ａの配置は
外側カテーテル２の側面に上下左右に規則的またはラン
ダムに形成しても良く、孔８ａは先端部３より０．５ｃ
ｍから３ｃｍ以内の箇所に直径０．５ｍｍから２．０ｍ
ｍの大きさで形成するのが良い。孔８ａを先端部３から
０．５ｃｍ未満に形成すると内側カテーテル４の内部に
水分が侵入しやすくなるので好ましくない。また孔８ａ
を先端部３から３ｃｍを越えて形成すると鼻孔中のガス
成分を内側カテーテル４で吸引しずらくなるので正確な
ガス成分の分析ができないので好ましくない。図５のよ
うに形成した外側カテーテル２の内部に内側カテーテル
４の先端部７を、孔８ａよりも後方に配置して使用する
ことにより、外側カテーテル２の正面又は側面の孔８ａ
は過半数が水分で塞がれても残りの孔８ａより周囲のガ
ス成分を吸引するため、内側カテーテルに水分は侵入し
ない。このため安定したガス成分の吸引、分析が可能と
なる。図５の外側カテーテル２は図２から図４のいずれ
の内側カテーテル４とも組み合わせて使用することがで
きる。Further, as shown in FIG. 5, a plurality of holes 8a are formed in the rear side surface of the truncated cone-shaped tip portion 3 (the front portion is open) of the outer catheter 2 so that the water content inside the inner catheter 4 is increased. Can be prevented from entering. The number of holes 8a is from 2 to 20, and the holes 8a may be regularly or randomly formed on the side surface of the outer catheter 2 vertically or horizontally.
0.5m to 2.0m in diameter within 3cm
It is better to form it with a size of m. Forming the hole 8a less than 0.5 cm from the tip 3 is not preferable because moisture easily enters the inside of the inner catheter 4. Also the hole 8a
It is not preferable to form the gas from the tip portion 3 beyond 3 cm because the gas component in the nostril is difficult to be sucked by the inner catheter 4, and the gas component cannot be accurately analyzed. By using the distal end portion 7 of the inner catheter 4 arranged rearward of the hole 8a inside the outer catheter 2 formed as shown in FIG. 5, the front or side hole 8a of the outer catheter 2 can be obtained.
Even if a majority of the gas is blocked with water, the surrounding gas components are sucked through the remaining holes 8a, so that water does not enter the inner catheter. Therefore, stable suction and analysis of gas components are possible. The outer catheter 2 of FIG. 5 can be used in combination with any of the inner catheters 4 of FIGS.
【０００９】また外側カテーテル２の内壁面は、図６の
ように平滑面に形成しても良いが、図７、図８のように
複数の溝１２を形成して、内側カテーテル４を外側カテ
ーテル２の内壁面から浮かして、水分の侵入を防止する
ことができる。また内側カテーテル４の外周に移動式ロ
ック部５を装着することにより内側カテーテル４の外側
カテーテル２への設定位置を自由に設定し、設定位置が
ズレないように固定することができる。さらに図９のよ
うに内側カテーテル４の外側に引き出し目標線１０を形
成することにより、内側カテーテル４と外側カテーテル
２の相対的位置を一目で確認することができる。また内
側カテーテル４の後方にコネクター６を設けることによ
り呼気ガス濃度計のモニターに容易に接続することがで
きる。さらに図１０に示すように外側カテーテル２の後
方に分岐部１１を設けこれに内側カテーテル４と外側カ
テーテル２の延長カテーテル４ａ、２ａを接続すること
ができる。延長カテーテル４ａ、２ａの後方にはコネク
ター６、６が接続される。Although the inner wall surface of the outer catheter 2 may be formed as a smooth surface as shown in FIG. 6, a plurality of grooves 12 are formed as shown in FIG. 7 and FIG. By floating from the inner wall surface of 2, it is possible to prevent water from entering. Further, by mounting the movable lock portion 5 on the outer circumference of the inner catheter 4, the set position of the inner catheter 4 on the outer catheter 2 can be freely set and fixed so that the set position does not shift. Further, by forming the extraction target line 10 on the outside of the inner catheter 4 as shown in FIG. 9, the relative positions of the inner catheter 4 and the outer catheter 2 can be confirmed at a glance. Further, by providing the connector 6 behind the inner catheter 4, it can be easily connected to the monitor of the breath gas concentration meter. Further, as shown in FIG. 10, a branch portion 11 is provided at the rear of the outer catheter 2, and the inner catheter 4 and the extension catheters 4a, 2a of the outer catheter 2 can be connected thereto. Connectors 6, 6 are connected to the rear of the extension catheters 4a, 2a.
【００１０】次にカテーテル１の使用方法の一例につい
て説明する。例えば非挿管時の麻酔もしくは集中治療室
で必要な場合、非計測者の鼻孔より中咽頭までカテーテ
ル１を挿入し、コネクター６に接続チューブを接続し、
さらに接続チューブを呼気ガス濃度計のモニターに接続
する。モニターにより陰圧で被計測者のガス成分を吸引
し分析を行う。陰圧を止めることにより呼吸圧力波形が
計測できる。Next, an example of how to use the catheter 1 will be described. For example, if anesthesia during non-intubation or if necessary in the intensive care unit, insert the catheter 1 from the nostril of the non-measurement person to the oropharynx, connect the connection tube to the connector 6,
Further, connect the connecting tube to the monitor of the exhalation gas concentration meter. The monitor sucks the gas component of the person to be measured with negative pressure and analyzes it. The respiratory pressure waveform can be measured by stopping the negative pressure.
【００１１】[0011]
【発明の効果】 患者（被計測者）に苦痛や違和感を与えることなく鼻
孔に容易に挿入することができ中咽頭部に容易に留置す
ることができる。 患者（被計測者）のガス成分吸引の際に、水分の吸引
を防止することができ、呼気ガス濃度計のモニターに容
易に接続することができるので、安定した信頼性の高い
計測値を得ることができる。EFFECTS OF THE INVENTION The patient (measured person) can be easily inserted into the nostril without causing pain or discomfort, and can be easily placed in the oropharynx. Since it is possible to prevent the inhalation of water when inhaling the gas component of the patient (measurement person) and to easily connect it to the monitor of the exhalation gas concentration meter, a stable and highly reliable measurement value can be obtained. be able to.
【図１】本発明のカテーテルの概略図FIG. 1 is a schematic diagram of the catheter of the present invention.
【図２】図１の内側カテーテルの概略図2 is a schematic view of the inner catheter of FIG.
【図３】図１の内側カテーテルの概略図3 is a schematic view of the inner catheter of FIG.
【図４】図１の内側カテーテルの概略図4 is a schematic view of the inner catheter of FIG.
【図５】図１の外側カテーテルの一部拡大図5 is a partially enlarged view of the outer catheter of FIG.
【図６】図１の外側カテーテルの断面図6 is a cross-sectional view of the outer catheter of FIG.
【図７】図１の外側カテーテルの断面図7 is a cross-sectional view of the outer catheter of FIG.
【図８】図１の外側カテーテルの断面図8 is a cross-sectional view of the outer catheter of FIG.
【図９】本発明のカテーテルのその他の実施の形態を示
す概略図FIG. 9 is a schematic view showing another embodiment of the catheter of the present invention.
【図１０】本発明のカテーテルのその他の実施の形態を
示す概略図FIG. 10 is a schematic view showing another embodiment of the catheter of the present invention.
１ カテーテル ２ 外側カテーテル ３ 外側カテーテルの先端部 ４ 内側カテーテル ５ 移動式ロック部 ６ コネクター ７ 内側カテーテルの先端部 ８、８ａ 孔 ９ スリット １０ 引き出し目標線 １１ 分岐部 １２ 溝 ２ａ、４ａ 延長カテーテル 1 Catheter 2 Outer Catheter 3 Tip of Outer Catheter 4 Inner Catheter 5 Movable Lock Part 6 Connector 7 Tip of Inner Catheter 8, 8a Hole 9 Slit 10 Drawing Target Line 11 Branch 12 Groove 2a, 4a Extension Catheter
───────────────────────────────────────────────────── フロントページの続き (72)発明者 笹 幸一 神奈川県相模原市横山台１丁目26番７号 川澄化学工業株式会社相模原事業所内 (72)発明者 比留間 幸子 神奈川県相模原市横山台１丁目26番７号 川澄化学工業株式会社相模原事業所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Koichi Sasa 1-26-7 Yokoyamadai, Sagamihara City, Kanagawa Kawasumi Chemical Co., Ltd. Sagamihara Works (72) Inventor Yukiko Hiruma 1-26 Yokoyamadai, Sagamihara City, Kanagawa Prefecture No. 7 Kawasaki Chemical Industry Co., Ltd. Sagamihara Works
Claims (6)
４を配置することにより構成され、 外側カテーテル２と内側カテーテル４は柔軟性を有する
材料から構成され、 外側カテーテル２の先端部３は円錐台状に形成され、 内側カテーテル４は先端部７をテーパーに形成し、外周
に移動式ロック部５を装着し、後方にコネクター６を接
続し、 内側カテーテル４の先端部７を外側カテーテル２の先端
部３の後方に配置した、 ことを特徴とする呼気ガス濃度検出用カテーテル１。1. An inner catheter 4 is arranged in an outer catheter 2, the outer catheter 2 and the inner catheter 4 are made of a flexible material, and a tip portion 3 of the outer catheter 2 has a truncated cone shape. The inner catheter 4 has a tapered tip portion 7, a movable lock portion 5 is attached to the outer periphery, and a connector 6 is connected to the rear side. The tip portion 7 of the inner catheter 4 is attached to the tip portion of the outer catheter 2. 3. A catheter for expiratory gas concentration detection 1, which is arranged at the rear of 3.
孔８を形成するかあるいは先端部７を閉塞しかつテーパ
ー部にスリット９を形成したことを特徴とする請求項１
記載の呼気ガス濃度検出用カテーテル１。2. The inner catheter 4 is characterized in that a hole 8 is formed behind the distal end portion 7 or that the distal end portion 7 is closed and a slit 9 is formed in the tapered portion.
The exhaled gas concentration detecting catheter 1 described.
に複数の孔８ａを形成したことを特徴とする請求項１な
いし請求項３記載の呼気ガス濃度検出用カテーテル１。3. The exhaled gas concentration detecting catheter 1 according to claim 1, wherein the outer catheter 2 has a plurality of holes 8a formed in the rear side surface of the tip portion 3.
２を形成した請求項１ないし請求項３記載の呼気ガス濃
度検出用カテーテル１。4. A plurality of grooves 1 on the inner wall surface of the outer catheter 2.
The exhaled gas concentration detecting catheter 1 according to claim 1, wherein the catheter 1 is formed with two.
線１０を形成した請求項１ないし請求項４記載の呼気ガ
ス濃度検出用カテーテル１。5. The exhaled gas concentration detecting catheter 1 according to claim 1, wherein a drawing target line 10 is formed on the outside of the inner catheter 4.
設けこれに内側カテーテル４と外側カテーテル２の延長
カテーテル４ａ、２ａを接続し、延長カテーテル４ａ、
２ａにコネクター６、６を接続したことを特徴とする請
求項１ないし請求項５に記載の呼気ガス濃度検出用カテ
ーテル１。6. A branch portion 11 is provided at the rear of the outer catheter 2, and the inner catheter 4 and the extension catheters 4a and 2a of the outer catheter 2 are connected to the branch portion 11, and the extension catheter 4a,
The expiratory gas concentration detecting catheter 1 according to any one of claims 1 to 5, wherein connectors 6 are connected to 2a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8053991A JPH09262297A (en) | 1996-01-24 | 1996-02-16 | Catheter for detecting gas density in expiration |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8-28771 | 1996-01-24 | ||
| JP2877196 | 1996-01-24 | ||
| JP8053991A JPH09262297A (en) | 1996-01-24 | 1996-02-16 | Catheter for detecting gas density in expiration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09262297A true JPH09262297A (en) | 1997-10-07 |
Family
ID=26366916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8053991A Pending JPH09262297A (en) | 1996-01-24 | 1996-02-16 | Catheter for detecting gas density in expiration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09262297A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11347130A (en) * | 1998-06-04 | 1999-12-21 | Nippon Zeon Co Ltd | Sheath for medical treatment |
| JP2012085671A (en) * | 2010-10-15 | 2012-05-10 | Nippon Koden Corp | Respiratory information detection method and tube for respiratory information detection used for the same |
-
1996
- 1996-02-16 JP JP8053991A patent/JPH09262297A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11347130A (en) * | 1998-06-04 | 1999-12-21 | Nippon Zeon Co Ltd | Sheath for medical treatment |
| JP2012085671A (en) * | 2010-10-15 | 2012-05-10 | Nippon Koden Corp | Respiratory information detection method and tube for respiratory information detection used for the same |
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